amity vs rapprochement

amity

noun
  • Mutual understanding and a peaceful relationship, especially between nations; peace; accord. 

  • Friendship. The cooperative and supportive relationship between people, or animals. In this sense, the term connotes a relationship which involves mutual knowledge, esteem, affection, and respect along with a degree of rendering service to friends in times of need or crisis. 

rapprochement

noun
  • The reestablishment of cordial relations, particularly between two countries; a reconciliation. 

How often have the words amity and rapprochement occurred in a corpus of books? (source: Google Ngram Viewer )